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Objective:

In this tutorial, we will use Osoyoo Model-3 Robot Learning Kit to make a simple remote controlled smart car. Once the car installation is completed, we will use an Infrared Remote to control the car movements including go forward, go back, left turn and right turn.

Parts and Devices:

No. Device Picture Qty. Link
1 IR receiver 1 Click here to buy
2 IR remote controller 1 Click here to buy
3 Hex Screwdriver 1 Click here to buy
4 20pin 15cm Female to Female Cable 1 Click here to buy

Hardware Installation:
Step 1: Install the smart car basic frame work as per Lesson 1 . If you have already completed installation in Lesson 1 , just keep it as is.

Step 2: Add an IR receiver module onto the car. Install the IR receiver module with 2pcs M3 plastic screws, M3 plastic pillars and M3 plastic nuts as follow:

Step 3: Connect S-VCC-GND IR receiver with D12-5V-GND of OSOYOO motor shield V1.0, as the following photo (Remember : DO NOT remove any existing wires installed in Lesson 1 ) :


Software Installation:

Open-source Arduino
Software(IDE)
Download Arduino IDE here:
https://www.arduino.cc/en/Main/Software?setlang=en
7 zip is a free zip
utility that un-zips zip files
Download 7zip here for free
https://www.7-zip.org/

Step 1: Install latest Arduino IDE (If you have Arduino IDE version after 1.1.16, please skip this step)
Download Arduino IDE from https://www.arduino.cc/en/Main/Software?setlang=en , then install the software.

Step 2: Install IRremote library into Arduino IDE (If you have already installed IRremote library, please skip this step)
Download IRremote library from https://osoyoo.com/picture/2WD_Car_V2.0/code/IRremote.zip, then import the library into Arduino IDE(Open Arduino IDE-> click Sketch->Include Library->Add .Zip Library)

Step 3: Download Lesson 2 sample code and unzip the download zip file lesson2.zip, you will see a folder called lesson2.

Step 4: Connect UNO R3 board to PC with USB cable, Open Arduino IDE -> click file -> click Open -> choose code “lesson2.ino” in lesson2 folder, load the code into arduino.

Notice: Shut off your battery or Unplug your power adapter when upload sketch code to Arduino.


Step 5: Choose corresponding board and port for your project,upload the sketch to the board.

Testing:
Press IR controller keys to control the car movements:

Trouble shooting:
Some user found that this IR remote does not work. The reason might be the IR remote sends different button code which does not match our sample code. In order to solve this problem. Please take following steps:
Step A) Get the IR code of each button in your IR remote.
Copy code from following link:https://osoyoo.com/wp-content/uploads/samplecode/irdemo2.ino

upload above sketch into your Arduino and open the serial monitor in your upper-right corner.

press the ◄ ► ▲ ▼”OK” button in your remote, you will see their IR code as following picture:

Write down the IR code of your control buttons ◄ ► ▲ ▼ “OK” button,

STEP B)replace the IR code in lesson 2 sketch file:
Open your Lesson 2 code again, then you will see following lines define the IR CODE of each button:
#define IR_ADVANCE 0x00FF18E7 //code from IR controller “▲” button
#define IR_BACK 0x00FF4AB5 //code from IR controller “▼” button
#define IR_RIGHT 0x00FF5AA5 //code from IR controller “►” button
#define IR_LEFT 0x00FF10EF //code from IR controller “◄” button
#define IR_STOP 0x00FF38C7 //code from IR controller “OK” button
#define IR_turnsmallleft 0x00FFB04F //code from IR controller “#” button
Please change the value of each button in above lines to match the code from Step A). If you don’t know how to change, just send email to support@osoyoo.info and give us the code of each button from Step A), I can help you to change the code and email new sketch file to you.
Above method can also allow you to use other IR sending device (i.e TV remote, DVD remote, air conditioner remote etc) to control the car. Just use Step A) to get the key code of your remote and change the sketch file in Step B), it will work.